A category embracing two groups of prisoners marked with green triangles in the camp: so-called professional offenders and repeat offenders under preventive detention. They were obvious favorites of the SS. In practice, the German criminals were never assigned to hard labor and even the least competent among them were assigned to Kommandos as functionaries. At the end of the summer of 1944, there were 1,372 Germans marked with the green triangle in Auschwitz. Many of them later volunteered for Oskar Dirlewanger’s Waffen‑SS unit, which committed numerous atrocities in rear areas on the Eastern Front.

(Mini dictionary of terms from the history of Auschwitz)